Patents by Inventor Il-Kuk Chang

Il-Kuk Chang has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Method of producing an undifferentiated avian cell culture using avian primordial germ cells
    Patent number: 6333192
    Abstract: A method of producing undifferentiated avian cells expressing an embryonic stem cell phenotype. The method includes the steps of collecting avian gonadal cells comprising primordial germ cells from an avian embryo after the formation of the primitive streak; depositing the avian gonadal cells in contact with a preconditioned feeder matrix; and growing the avian gonadal cells on the pre-conditioned feeder matrix in the presence of media for a time sufficient to produce an avian cell culture consisting essentially of undifferentiated avian cells expressing an embryonic stem cell phenotype.
    Type: Grant
    Filed: August 9, 1999
    Date of Patent: December 25, 2001
    Assignee: North Carolina State University
    Inventors: James N. Petitte, Il-Kuk Chang